CN102386804A - Self-powered device of automobile remote keyless entry - Google Patents

Self-powered device of automobile remote keyless entry Download PDF

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Publication number
CN102386804A
CN102386804A CN201110334540XA CN201110334540A CN102386804A CN 102386804 A CN102386804 A CN 102386804A CN 201110334540X A CN201110334540X A CN 201110334540XA CN 201110334540 A CN201110334540 A CN 201110334540A CN 102386804 A CN102386804 A CN 102386804A
Authority
CN
China
Prior art keywords
button
cantilever
piezoelectric vibrator
twin lamella
automobile remote
Prior art date
Application number
CN201110334540XA
Other languages
Chinese (zh)
Inventor
刘建芳
孙威
刘家郡
范尊强
杨志刚
Original Assignee
吉林大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 吉林大学 filed Critical 吉林大学
Priority to CN201110334540XA priority Critical patent/CN102386804A/en
Publication of CN102386804A publication Critical patent/CN102386804A/en

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Abstract

The invention relates to a self-powered device of automobile remote keyless entry and belongs to the field of automobile remote keyless entry. The self-powered device of automobile remote keyless entry is structurally characterized by mainly comprising a shell, cantilever duplex crystal piezoelectric vibrators, a button mechanism, a metal ball, a reset spring and a circuit board, wherein the circuit board is connected with the interior of the shell fixedly, the circuit board is connected with four cantilever duplex crystal piezoelectric vibrators in parallel through connecting leads; the four cantilever duplex crystal piezoelectric vibrators form a piezoelectric vibrator array, one ends of the cantilever duplex crystal piezoelectric vibrators are suspended and fixed on a support, the other ends of the cantilever duplex crystal piezoelectric vibrators are unrestrained; and the button mechanism is in contact connection with the cantilever duplex crystal piezoelectric vibrators. The device provided by the invention has the advantages that electric energy can be obtained by press, shaking or vibration during running of an automobile, so that the device can not only meet the requirements on voltages and power for self-power supply of automobile remote keyless entry but also has the characteristics of simplicity in operation, energy conservation, environmental friendliness, no need of maintenance and capability of working normally even when the energy is used up.

Description

A kind of automobile remote-control key self-power supply device

Technical field

The invention belongs to the automobile remote-control key field, be specifically related to a kind of automobile remote-control key self-power supply device, can be widely used in any passenger car and commercial car or other field of remote control.

Background technology

Along with the application day by day of integrated circuit, MEMS (MEMS) and portable electric appts, automobile remote-control key has obtained using widely.But in its energy supply, still taking traditional energy-provision way, promptly utilizing battery as main energy supply.Because the battery-powered mode exists many drawbacks; Comprise multiple harmful substances such as mercury, lead, cadmium together; Energy supply limited service life, needs periodic replacement etc.; Problems such as the waste of material that is brought thus, environmental pollution, increase consumer use cost also can not be ignored, and especially for present development wireless network and embedded system day by day rapidly, battery powered defective is more obvious.Simultaneously, some auto vendor in remote-control key, can't open cell sealing, and also some auto vendor adopts non-standard battery, has brought inconvenience also for the replacing of battery.

Therefore, research energy source device novel, environmental protection replaces traditional battery imperative.Along with the development of various portable microminiature electronic products, the various new micro generation method that is used to satisfy its instructions for use has Electromagnetic generation, electrostatic generating and piezo-electric generating.Compare with other electricity generating principle; Piezo-electric generating is to utilize the direct piezoelectric effect of piezoelectric to change mechanical vibrational energy into electric energy; Have simple in structure, do not generate heat, no electromagnetic interference, pollution-free and be easy to realize microminiaturization and plurality of advantages such as integrated; Be particularly useful for the power supply of low-power consumption MEMS such as automobile remote-control key, substitute battery or be battery charge automatically.But piezo-electric generating method mainly all concentrates on the piezo-electric generating research of single cantilever beam piezoelectric vibrator at present; Like Chinese invention patent (application number) 200810051157.1 and 200810051579.9; Yet the vibration source vibration frequency in the environment is often unstable; The single cantilever beam piezoelectric vibrator be difficult for to be realized the matched well with ambient vibration source vibration frequency, the abundant vibrational energy in the absorbing environmental, and this will cause the energy conversion efficiency of piezoelectric generating device low.

Summary of the invention

The present invention provides a kind of automobile remote-control key self-power supply device ,To solve automobile remote-control key battery-powered limited service life in the prior art, increase consumer's use cost, change inconvenience and to alleviate the problem of environmental pollution that a large amount of old and useless battery is caused.

Technical scheme of the present invention is: the self-powered apparatus structure of automobile remote-control key mainly is made up of housing, cantilever beam twin lamella piezoelectric vibrator, button mechanism, metal ball, back-moving spring and circuit board; Circuit board is fixedly connected with enclosure interior; Button is fixedly connected with housing; Circuit board is connected with four cantilever beam twin lamella piezoelectric vibrators of parallel connection through connecting lead; Four cantilever beam twin lamella piezoelectric vibrators are formed piezoelectric vibrator row that shake, cantilever beam twin lamella piezoelectric vibrator one end suspend be fixed on the bearing, the other end is free, button mechanism contacts with cantilever beam twin lamella piezoelectric vibrator and is connected; Button mechanism is made up of active button, driven button and button shell; Button mechanism is fixedly connected between housing and the baffle plate; The button mechanism bottom is through ring washer and back-moving spring crimping; Button mechanism, back-moving spring and axle sleeve connect, and axle is fixedly connected with housing, and metal ball places respectively in the cavity of many cantilever beams twin lamella piezoelectric vibrator, housing and baffle plate formation; Initiatively have on the button circumferentially to be uniformly distributed with square pin, initiatively there is ratchet structure the button lower end, and the moving tooth that upwards is uniformly distributed with in week is arranged on the driven button; The moving tooth inclined-plane is arranged on the driven button; Moving tooth inclined-plane and ratchet structure clamping have curved surface profile, circumferential step, groove, internal diameter end face in the button shell, button shell and initiatively button, driven button socket; Square pin and groove are slidingly connected, and moving tooth and internal diameter end face are slidingly connected.

The invention has the advantages that: can through push, shake or vehicle traveling process in mode of vibration obtain electric energy; Can not only satisfy the required voltage of automobile remote-control key self energizing, power requirement, and have simple to operate, energy-conserving and environment-protective, non-maintaining, can characteristics such as can't not use because of depleted of energy.Simultaneously; Adopt four cantilever beam twin lamella piezoelectric vibrator structures to widen the resonance frequency band of piezoelectric vibrator; Improve the energy conversion efficiency of piezo-electric generating and can gather the energy of more frequency range in the environment; Thereby generated output is bigger, and reliability is higher, helps miniaturization, system integrated on the implementation structure.Fundamentally solve the present automobile remote-control key use energy supply limited service life that battery brought, increased use cost, changed the problems such as environmental pollution that inconvenient and a large amount of old and useless batterys are caused.

Description of drawings

Fig. 1 is an automobile remote-control key self-power supply device generalized section of the present invention;

Fig. 2 is the A-A cutaway view of Fig. 1;

Fig. 3 a is a button mechanism structure of the present invention;

Fig. 3 b is a button mechanism blast structural representation of the present invention;

Fig. 3 c sketch map that is the driven button screens of the present invention in the active button ratchet structure;

Fig. 3 d is a button housing internal structure sketch map of the present invention;

Fig. 3 e is a button housing internal cross section sketch map of the present invention;

Fig. 4 is power circuit of the present invention and remote control circuit figure.

Embodiment

The self-powered apparatus structure of automobile remote-control key mainly is made up of housing 1, cantilever beam twin lamella piezoelectric vibrator 6, button mechanism 4, metal ball 11, back-moving spring 5 and circuit board 2; Circuit board 2 is connected with housing 1 internal fixation; Button 3 is fixedly connected with housing 1; Circuit board 2 is connected with four cantilever beam twin lamella piezoelectric vibrators 6 of parallel connection through connecting lead; Four cantilever beam twin lamella piezoelectric vibrators 6 are formed piezoelectric vibrator row that shake, cantilever beam twin lamella piezoelectric vibrator 6 one ends suspend be fixed on the bearing 8, the other end is free, button mechanism 4 contacts with cantilever beam twin lamella piezoelectric vibrator 6 and is connected; Button mechanism 4 is made up of active button 41, driven button 42 and button shell 43; Button mechanism 4 is fixedly connected between housing 1 and the baffle plate 7; Button mechanism 4 bottoms are through ring washer 9 and back-moving spring 5 crimping; A button mechanism 4, back-moving spring 5 and axle 10 sockets, axle 10 are fixedly connected with housing 1, and metal ball 11 places respectively in the cavity of many cantilever beams twin lamella piezoelectric vibrator 6, housing 1 and baffle plate 7 formations; Initiatively have on the button 41 and circumferentially be uniformly distributed with square pin 411; Initiatively there is ratchet structure 412 button 41 lower ends; The moving tooth 422 that upwards is uniformly distributed with in week is arranged on the driven button 42, on the driven button 42 moving tooth inclined-plane 421 is arranged, moving tooth inclined-plane 421 and ratchet structure 412 clampings; Curved surface profile 431, circumferential step 432, groove 433, internal diameter end face 434 are arranged in the button shell 43; Button shell 43 is slidingly connected with groove 433 with initiatively button 41,42 sockets of driven button, square pin 411, and moving tooth 422 is slidingly connected with internal diameter end face 434.

When external force F promotion active button 41 moves downward; The ratchet structure 412 of active button 41 withstands moving tooth inclined-plane 421 and moves downward together; Because initiatively button 41 circumferentially is uniformly distributed with the restriction of square pin 411 and in the groove 433 of button shell, slides up and down; When 41 motions of active button were close to terminal point, moving tooth 422 just broke away from the restriction of button shell 43 internal diameter end faces 434, and screens is in the ratchet structure 412 of active button 41 under the effect of back-moving spring 5; This moment, initiatively button 41 motions were reached home, and button shell 43 following circumferential step 432 are blocked the location; After ambient pressure F removed, because the effect of back-moving spring 5, moving tooth inclined-plane 421 contacted with button shell 43 interior curved surface profiles 431 and slides along curved surface profile 431; Driven button 42 and the moving tooth 422 that upwards is uniformly distributed with in its week are together rotated, stir the free end of cantilever beam twin lamella piezoelectric vibrator 6, stir 6 sustained vibrations of cantilever beam twin lamella piezoelectric vibrator after the disengaging; Thereby generating; Rotate simultaneously moving tooth 422 at driven button 42 and promote initiatively that buttons 41 move upward with ratchet structure 412, the state of final principal and subordinate's button motion before trigger, driven button 42 just rotated 90 degree and accomplished a motion cycle this moment; In whole process; Back-moving spring 5 moves up and down with back-up ring 9, and back-up ring 9 contacts with 42 on driven button, has slight relatively rotating also to recover.

Through shaking automobile key or utilizing the vibration in the vehicle traveling process; Make metal ball 11 continue bump excitation cantilever arm beam twin lamella piezoelectric vibrator 6 and make it to produce flexural vibrations acquisition electric energy; Perhaps through pushing another free end that cantilever beam twin lamella piezoelectric vibrator 6 is stirred by knob mechanism 4; Make it to produce lasting flexural vibrations and metal ball 11 bump vibration generation electric charges, accomplish the conversion of mechanical energy to electric energy.The piezo-electric generating power circuit is collected and is stored the electric energy that cantilever beam twin lamella piezoelectric vibrator 6 produces, and is control circuit and wireless transceiver circuit 25 power supplies.

Vibrating with hand wobble automobile key or automobile automobile key generation in the process of moving; Make metal ball 11 bump cantilever beam twin lamella piezoelectric vibrators 6 equally, make it to produce vibration deformation, thus generating; The AC energy that 6 vibrations of cantilever beam twin lamella piezoelectric vibrator produce; After rectifier bridge 21 rectifications, be stored in the super capacitor 22, power management module 23 has two effects thereafter: the one, and when energy was enough to drive microprocessor 24 with wireless transceiver circuit 25, switch just conducting made control module work; The 2nd, when hold the energy overtension time unnecessary electric energy discharged, thereby protection control module thereafter.Control and transmission circuit carry PCB antenna 26 by C8051F920 low-power scm 24, radio receiving transmitting module 25, plate to be formed with push-button switch 3.The function of C8051F920 single-chip microcomputer 24 is after detecting button 3 and pressing, these button 3 corresponding codes signals to be carried PCB antenna 26 through plate send.

Claims (1)

1. automobile remote-control key self-power supply device; It is characterized in that: the self-powered apparatus structure of automobile remote-control key mainly is made up of housing, cantilever beam twin lamella piezoelectric vibrator, button mechanism, metal ball, back-moving spring and circuit board; Circuit board is fixedly connected with enclosure interior; Button is fixedly connected with housing, and circuit board is connected with four cantilever beam twin lamella piezoelectric vibrators of parallel connection through connecting lead, piezoelectric vibrator of four cantilever beam twin lamella piezoelectric vibrator compositions row that shake; Cantilever beam twin lamella piezoelectric vibrator one end suspend be fixed on the bearing, the other end is free, button mechanism contacts with cantilever beam twin lamella piezoelectric vibrator and is connected; Button mechanism is made up of active button, driven button and button shell; Button mechanism is fixedly connected between housing and the baffle plate; The button mechanism bottom is through ring washer and back-moving spring crimping; Button mechanism, back-moving spring and axle sleeve connect, and axle is fixedly connected with housing, and metal ball places respectively in the cavity of many cantilever beams twin lamella piezoelectric vibrator, housing and baffle plate formation; Initiatively have on the button circumferentially to be uniformly distributed with square pin, initiatively there is ratchet structure the button lower end, and the moving tooth that upwards is uniformly distributed with in week is arranged on the driven button; The moving tooth inclined-plane is arranged on the driven button; Moving tooth inclined-plane and ratchet structure clamping have curved surface profile, circumferential step, groove, internal diameter end face in the button shell, button shell and initiatively button, driven button socket; Square pin and groove are slidingly connected, and moving tooth and internal diameter end face are slidingly connected.
CN201110334540XA 2011-10-30 2011-10-30 Self-powered device of automobile remote keyless entry CN102386804A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201110334540XA CN102386804A (en) 2011-10-30 2011-10-30 Self-powered device of automobile remote keyless entry

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201110334540XA CN102386804A (en) 2011-10-30 2011-10-30 Self-powered device of automobile remote keyless entry

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CN102386804A true CN102386804A (en) 2012-03-21

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106026719A (en) * 2016-05-25 2016-10-12 西安电子科技大学 P-SSHI active rectifier circuit and self-powered electronic equipment
CN108076256A (en) * 2016-11-18 2018-05-25 天津嘉深保科技发展有限公司 A kind of market survey service camera
CN110136418A (en) * 2019-05-27 2019-08-16 北京首汽智行科技有限公司 Control method for vehicle, device and server based on mobile unit

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2322903A (en) * 1997-02-21 1998-09-09 Valeo Electronique Motor vehicle key
CN101447748A (en) * 2008-09-12 2009-06-03 吉林大学 Piezoelectric self-powersupply low power consumption remote controller
US20100052324A1 (en) * 2005-10-18 2010-03-04 Board Of Regents, The University Of Texas System Piezoelectric windmill apparatus
CN102170248A (en) * 2011-04-22 2011-08-31 中南大学 Ambient vibration energy collecting device based on two-DOF (Degree of Freedom) piezoelectric vibrator
CN102223107A (en) * 2011-06-27 2011-10-19 重庆大学 System for collecting wide-band low-frequency micro piezoelectric vibration energy
CN102223105A (en) * 2010-04-14 2011-10-19 南京航空航天大学 Piezoelectric generator
FR2959058A1 (en) * 2010-04-14 2011-10-21 Arveni Remote control device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2322903A (en) * 1997-02-21 1998-09-09 Valeo Electronique Motor vehicle key
US20100052324A1 (en) * 2005-10-18 2010-03-04 Board Of Regents, The University Of Texas System Piezoelectric windmill apparatus
CN101447748A (en) * 2008-09-12 2009-06-03 吉林大学 Piezoelectric self-powersupply low power consumption remote controller
CN102223105A (en) * 2010-04-14 2011-10-19 南京航空航天大学 Piezoelectric generator
FR2959058A1 (en) * 2010-04-14 2011-10-21 Arveni Remote control device
CN102170248A (en) * 2011-04-22 2011-08-31 中南大学 Ambient vibration energy collecting device based on two-DOF (Degree of Freedom) piezoelectric vibrator
CN102223107A (en) * 2011-06-27 2011-10-19 重庆大学 System for collecting wide-band low-frequency micro piezoelectric vibration energy

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106026719A (en) * 2016-05-25 2016-10-12 西安电子科技大学 P-SSHI active rectifier circuit and self-powered electronic equipment
CN108076256A (en) * 2016-11-18 2018-05-25 天津嘉深保科技发展有限公司 A kind of market survey service camera
CN110136418A (en) * 2019-05-27 2019-08-16 北京首汽智行科技有限公司 Control method for vehicle, device and server based on mobile unit

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Application publication date: 20120321